<template>
  <view class="search-box">
    <uni-search-bar  @input="input" radius="100" cancelButton="none"></uni-search-bar>
    <view class="sugg-list" v-if="searchResults.length != 0 ">
      <view class="sugg-item" v-for="(item, i) in searchResults" :key="i" @click="gotoDetail(item)">
        <view class="goods-name">{{item.goods_name}}</view>
        <uni-icons type="arrowright" size="16"></uni-icons>
      </view>
    </view>
    <view class="history-box" v-else>
      <view class="history-title">
        <text>搜索历史</text>
        <uni-icons type="trash" size="17" @click="cleanHistory"></uni-icons>
      </view>
      <uni-tag  class="history-list" :text="item" v-for="(item, i) in historyList" :key="i" @click="gotoGoodsList(item)"></uni-tag>
    </view>
  </view>
</template>

<script>
  export default {
    data() {
      return {
        timer: null,
        kw: '',
        searchResults:[],
        historyList:['a','app','dsdsd']
      };
    },
    computed: {
      histories(){
        return [...this.historyList].reverse()
      }
    },
    onLoad() {
      this.historyList = JSON.parse(uni.getStorageSync('kw') || '[]')
    },
    methods: {
      input(e){
        clearTimeout(this.timer)
        this.timer = setTimeout(() =>{
          this.kw = e
          this.getSearchList()
        },500)
      },
     async getSearchList(){
        if(this.kw === '') return this.searchResults = []
        const {data: res} = await uni.$http.get('/api/public/v1/goods/qsearch', { query: this.kw })
        if(res.meta.status != 200) return uni.$showMsg()
        this.searchResults = res.message
        this.saveSearchHistory()
      },
    saveSearchHistory(){
       this.historyList.unshift(this.kw)
       this.historyList = [... new Set(this.historyList)]
       uni.setStorageSync('kw', JSON.stringify(this.historyList))
      },
      
      gotoDetail(item) {
        uni.navigateTo({
          url:'/subpkg/goods_detail/goods_detail?goods_id=' + item.goods_id
        })
      },
      cleanHistory(){
        this.historyList = [],
        uni.setStorageSync('kw', '[]')
      },
      gotoGoodsList(item){
        uni.navigateTo({
          url:'/subpkg/goods_list/goods_list?query=' + item
        })
      }
    }
  }
</script>

<style lang="scss">
  .search-box{
    position: sticky;
    top: 0;
    z-index: 999;
  }
  .sugg-list {
    padding: 0 10px;
  
    .sugg-item {
      font-size: 12px;
      padding: 13px 0;
      border-bottom: 1px solid #efefef;
      display: flex;
      align-items: center;
      justify-content: space-between;
  
      .goods-name {
        // 文字不允许换行（单行文本）
        white-space: nowrap;
        // 溢出部分隐藏
        overflow: hidden;
        // 文本溢出后，使用 ... 代替
        text-overflow: ellipsis;
        margin-right: 3px;
      }
    }
  }
.history-box {
  padding: 0 5px;

  .history-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 40px;
    font-size: 13px;
    border-bottom: 1px solid #efefef;
  }

  .history-list {
    // display: flex;
    // flex-wrap: wrap;

    .uni-tag {
      display: inline-block;
      margin-top: 5px;
      margin-right: 5px;
      
    }
  }
}
</style>
